1999 Topps Stars 'N Steel Mark McGwire #21
1999
See all Mark McGwire cards & values1999 seasonSt. Louis CardinalsMark McGwire career & card values
$3.00est. value (ungraded)
Prices updated 2026-10-26
Based on recorded sold prices how we price cards
Mark McGwire price history
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 1999 Topps Stars 'N Steel Mark McGwire #21 each month, from 1 recorded price reading. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $3.00 | — |
Mark McGwire prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $3.00 | Buy on eBay ↗ |
| PSA 9 | $6.32 | Buy on eBay ↗ |
| Grade 9.5 | $7.00 | Buy on eBay ↗ |
| PSA 10 | $16.50 | Buy on eBay ↗ |
| BGS 10 | $21.00 | Buy on eBay ↗ |
| CGC 10 | $7.00 | Buy on eBay ↗ |
| SGC 10 | $10.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1999 Topps Stars 'N Steel Mark McGwire #21 value & prices
The 1999 Topps Stars 'N Steel Mark McGwire #21 is a Baseball card released in 1999. Ungraded copies carry a market value of about $3.00.
An ungraded copy is worth around $3.00, a PSA 9 around $6.32, a PSA 10 (Gem Mint) around $16.50 and a pristine BGS 10 around $21.00. That's roughly a 5.5× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.
Is it worth grading?
The spread between raw ($3.00) and top-graded ($16.50) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.
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